Moving shaft connecting assembly and air conditioner

Abstract

The invention discloses a movable shaft connecting assembly and an air conditioner, relates to the field of refrigeration, and is used for realizing reliable driving connection of two shafts. The movable shaft connecting assembly comprises a first shaft, a second shaft and a locking assembly. The first shaft comprises a first mounting hole; the second shaft is mounted in the first mounting hole and is in driving connection with the first shaft, so that one of the first shaft and the second shaft rotates to drive the other one to rotate; the locking assembly is constructed to limit the axial relative displacement of the first shaft and the second shaft; the locking assembly comprises a gland, a fastener and an anti-loosening assembly which are all located in the first mounting hole. The first shaft, the gland and the second shaft are fixedly connected through the fastener; the anti-loosening assembly is configured to prevent the fastener from loosening. According to the technical scheme, connection between the first shaft and the second shaft is more reliable.

Description

Technical Field

[0001] The invention relates to the field of refrigeration, and in particular to a dynamic shaft connection component and an air conditioner. Background Art

[0002] In the refrigeration industry, most compressors use direct drive servo motors. The inventors found that the motor rotor and the compressor rotor are connected by bolts, and the connection between the two is unreliable. Under the vibration generated by the long-term operation of the compressor and the change of force generated by the switching working conditions, the tightening force between the threads will decrease, causing the screws and the pressure block to fall off, causing the compressor to malfunction. Summary of the invention

[0003] The present invention provides a dynamic shaft connection assembly and an air conditioner, which are used to increase the reliability of the connection between two shafts.

[0004] An embodiment of the present invention provides a moving shaft connection assembly, including:

[0005] A first shaft including a first mounting hole;

[0006] a second shaft mounted in the first mounting hole, and the second shaft is drivingly connected to the first shaft, so that the rotation of one of the first shaft and the second shaft drives the other to rotate; and

[0007] A locking assembly is constructed to limit the axial relative displacement of the first shaft and the second shaft; the locking assembly includes a pressure cover, a fastener and an anti-loosening assembly all located in the first mounting hole; the fastener fixes the first shaft, the pressure cover and the second shaft together; the anti-loosening assembly is constructed to prevent the fastener from loosening.

[0008] In some embodiments, the first mounting hole includes a first hole segment and a second hole segment that are connected; the inner diameter of the first hole segment is larger than the inner diameter of the second hole segment; and one end of the second shaft is installed in the second hole segment.

[0009] In some embodiments, the gland comprises:

[0010] A cover body, a portion of which is located in the first hole segment, and the rest of which is located in the second hole segment; the cover body comprises a receiving groove;

[0011] a flange mounted on the outer periphery of the cover body, or the flange is integral with the cover body; the flange is located in the first hole section; and

[0012] A protrusion is located at the bottom of the receiving groove of the cover body, and the protrusion is fixedly connected to or integrated with the cover body; the pressure cover is provided with a second mounting hole, and the second mounting hole passes through the protrusion and the bottom of the receiving groove;

[0013] Part of the fastener is located in the receiving groove and the second mounting hole, and the rest of the fastener is located inside the second shaft.

[0014] In some embodiments, the fastener comprises:

[0015] a bolt head, located in the receiving groove; and

[0016] The screw rod is integral with the bolt head; one end of the screw rod facing the bolt head is located in the second mounting hole, and the other end of the screw rod away from the bolt head is located outside the gland and is screwed into the second shaft to form a threaded connection.

[0017] In some embodiments, the anti-loosening assembly includes:

[0018] A locking block, comprising a third mounting hole; the locking block is located inside the receiving groove, and the locking block is sleeved on the outer side of the protrusion through the third mounting hole; the locking block is located between the bolt head and the bottom of the receiving groove; the end surface of the locking block facing the bolt head is provided with a first locking tooth, and the end surface of the bolt head facing the locking block is provided with a second locking tooth; and

[0019] An elastic member, located between the locking block and the bottom wall of the receiving groove;

[0020] Wherein, the locking assembly includes a locking state. When the locking assembly is in the locking state, the fastener fixes the first shaft and the second shaft together, and the first locking tooth of the locking block engages with the second locking tooth of the fastener to prevent the fastener from reversing.

[0021] In some embodiments, when the locking assembly is in a locked state, a first gap exists between the locking block and the bottom of the accommodating groove.

[0022] In some embodiments, the locking assembly also includes an unlocked state. When the locking assembly is in the unlocked state, the locking block leaves the bolt head of the fastener under the action of an external force, and a second gap is formed between the locking block and the bolt head of the fastener.

[0023] In some embodiments, a groove wall of the accommodating groove is provided with a guide groove, an edge of the locking block is provided with a guide block, and the guide block is installed in the guide groove.

[0024] In some embodiments, there are multiple guide blocks, and each guide block is symmetrically arranged relative to the axis of the third mounting hole of the locking block.

[0025] In some embodiments, there are multiple guide grooves and multiple guide blocks, and the guide grooves and guide blocks are arranged in a one-to-one correspondence.

[0026] In some embodiments, a first mounting groove is provided on one side of the locking block facing the bottom of the accommodating groove, and a second mounting groove is provided on the bottom of the accommodating groove; one end of the elastic member is located in the first mounting groove, and the other end of the elastic member is located in the second mounting groove.

[0027] In some embodiments, the elastic members are in a plurality of groups, and the plurality of groups of elastic members are arranged at intervals along the circumference of the fastener.

[0028] In some embodiments, H is greater than the sum of A and B; wherein H is the axial height of the protrusion along the first axis, A is the minimum length of the elastic member, and B is the axial height of the locking block along the first axis.

[0029] An embodiment of the present invention further provides an air conditioner, comprising a dynamic shaft connection assembly provided by any technical solution of the present invention.

[0030] In some embodiments, the first shaft is a motor shaft, the second shaft is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

[0031] The dynamic shaft connection assembly provided by the above technical solution includes a first shaft, a second shaft and a locking assembly. The first shaft and the second shaft are driven and connected, and one shaft can drive the other shaft to rotate; in addition, the first shaft and the second shaft are also locked by the locking assembly, and the locking assembly locks the first shaft and the second shaft through a fastener; in addition to having a locking function, the locking assembly can also prevent the fastener from loosening, so that the connection of the fastener is more stable and reliable. During the working process of the first shaft and the second shaft, since the fastener is not easy to loosen, the drive connection between the first shaft and the second shaft is more reliable, the performance is more stable, and the performance of the equipment (such as air conditioners, etc.) with the dynamic shaft connection assembly is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic cross-sectional view of a moving shaft connection assembly provided in an embodiment of the present invention.

[0034] Figure 2 A schematic diagram of the locking assembly of the moving shaft connection assembly provided in an embodiment of the present invention in an original state.

[0035] Figure 3 A schematic diagram of a locking assembly of a moving shaft connection assembly provided in an embodiment of the present invention in a locked state.

[0036] Figure 4 A schematic diagram of a locking assembly of a moving shaft connection assembly provided in an embodiment of the present invention in an unlocked state.

[0037] Figure 5 A schematic top view of a locking assembly of a moving shaft connection assembly provided in an embodiment of the present invention.

[0038] Figure 6 A schematic cross-sectional view of a gland of a locking assembly of a moving shaft connection assembly provided in an embodiment of the present invention.

[0039] Figure 7 A schematic diagram of the three-dimensional structure of a locking block of a locking assembly of a moving shaft connecting assembly provided in an embodiment of the present invention.

[0040] Figure 8 A schematic diagram of the three-dimensional structure from another perspective of the locking block of the locking assembly of the moving shaft connection assembly provided in an embodiment of the present invention.

[0041] Fig. 9 A schematic diagram of the three-dimensional structure of a fastener of a locking assembly of a moving shaft connection assembly provided in an embodiment of the present invention.

[0042] Reference numerals:

[0043] 1. First axis; 2. Second axis; 3. Locking assembly;

[0044] 11, first mounting hole; 111, first hole section; 112, second hole section;

[0045] 31. gland; 32. fastener; 33. anti-loosening assembly;

[0046] 311, cover body; 312, flange; 313, protrusion; 311a, receiving groove; 311b, second mounting groove; 311c, guide groove; 311d, second mounting hole;

[0047] 321, bolt head; 322, screw rod; 32a, second locking tooth;

[0048] 331, locking block; 332, elastic member;

[0049] 331a, third mounting hole; 331b, first mounting groove; 331c, guide block; 331d, first locking tooth. DETAILED DESCRIPTION

[0050] Combine the following Figures 1 to 9The technical solution provided by the present invention is described in more detail. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary and not limiting.

[0051] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0052] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0053] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0054] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment are considered part of the specification.

[0055] The dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In the drawings, the same reference numerals are attached to common structural elements or structural elements of the same type, and their repeated descriptions are appropriately omitted.

[0056] In the description of the specific embodiments below, for the convenience of explanation, the axial direction of the first shaft 1 and the second shaft 2 is defined as the axial direction X of the movable shaft connection assembly, see Figure 1 shown.

[0057] See also Figures 1 to 9 , especially Figure 1 and Figure 2The embodiment of the present invention provides a dynamic shaft connection assembly, including a first shaft 1, a second shaft 2 and a locking assembly 3. The first shaft 1 includes a first mounting hole 11, and the first mounting hole 11 penetrates the first shaft 1 along the axial direction X of the first shaft 1. The second shaft 2 (specifically Figure 1 The right end of the second shaft 2 is installed in the first mounting hole 11, and the second shaft 2 is drivingly connected to the first shaft 1. The locking assembly 3 includes a gland 31, a fastener 32 and an anti-loosening assembly 33, all of which are located in the first mounting hole 11; the fastener 32 fixes the first shaft 1, the gland 31 and the second shaft 2, such as a bolt connection; the anti-loosening assembly 33 is configured to prevent the fastener 32 from loosening.

[0058] The first shaft 1 and the second shaft 2 are the moving shafts of different components. The moving shaft refers to a shaft that can rotate. For example, the first shaft 1 is the output shaft of the motor, and the second shaft 2 is the power input shaft of the compressor rotor. The first shaft 1 and the second shaft 2 are drive-connected, and the rotation of the first shaft 1 drives the second shaft 2 to rotate. The specific implementation method of the drive connection is, for example, a key connection. Considering that there may be axial stringing between the first shaft 1 and the second shaft 2 during the actual working process of the product, the locking assembly 3 is also used to limit the axial relative displacement of the first shaft 1 and the second shaft 2, so that the first shaft 1 and the second shaft 2 do not have axial relative displacement.

[0059] The relative positions of the first shaft 1 and the second shaft 2 are as follows: the first shaft 1 and the second shaft 2 are sleeved together. Specifically, the first shaft 1 includes a first mounting hole 11, and the first mounting hole 11 penetrates the first shaft 1 along the axial direction of the first shaft 1. One end of the second shaft 2 (specifically Figure 1 The right end of the first mounting hole 11 extends into the first mounting hole 11, and the first shaft 1 and the second shaft 2 are specifically connected by a key drive, and the key is set between the inner wall of the first mounting hole 11 and the outer wall of the second shaft 2. The key can accurately and efficiently realize torque transmission, so that the first shaft 1 and the second shaft 2 operate synchronously. The key can specifically be a flat key, a semicircular key, a wedge key or a spline. According to the force and transmission requirements, a single key, a double key or multiple keys can be set. A single key is used for ordinary transmission with small force and general coaxiality requirements; the two keys in the double key are symmetrically distributed at 180°, which can balance the force and share the torque, and is suitable for medium loads. The keys in the multiple keys are distributed along the circumference, the contact area is large, and the teeth are evenly stressed, which can meet the transmission requirements of high precision and high torque.

[0060] From the perspective of mechanical properties, the key can efficiently transmit torque, so that the first shaft 1 and the second shaft 2 rotate synchronously and maintain the stable operation of the mechanical system. From the perspective of production and processing, the key processing technology is mature and the manufacturing efficiency is high. From the perspective of assembly, keys such as flat keys and semicircular keys are easy to install and disassemble, and can be quickly replaced during maintenance, reducing equipment downtime. In addition, the spline has high centering accuracy and smooth transmission, which can greatly reduce vibration and noise, extend the service life of the equipment, and improve the overall transmission efficiency. The first shaft 1 and the second shaft 2 are connected by a key, and the torque transmission is more reliable.

[0061] The locking assembly 3 is mainly used to achieve axial limitation of the first shaft 1 and the second shaft 2, so that the first shaft 1 and the second shaft 2 will not stagger with each other in the axial direction X during operation, thereby causing the driving connection between the first shaft 1 and the second shaft 2 to fail or be unreliable. The locking assembly 3 includes two functions: axial fixation of the first shaft 1 and the second shaft 2 is achieved through the fastener 32 and the gland 31, and prevention of loosening of the fastener 32 through the anti-loosening assembly 33. The fastener 32 is specifically a bolt, which has reliable connection and is easy to disassemble and assemble.

[0062] There are many ways to implement the anti-loosening component 33, such as using a mechanical structure to achieve anti-loosening, or by combining a mechanical structure with an electronic component to achieve anti-loosening.

[0063] The above technical solution realizes the driving connection, axial fixed connection and anti-loosening of the first shaft 1 and the second shaft 2. The connection between the first shaft 1 and the second shaft 2 is more reliable. Even if the application scenario conditions are complex and harsh, and the vibration is large, the first shaft 1 and the second shaft 2 can still be reliably connected.

[0064] See also Figures 1 to 9 , especially Figures 1 to 3 In some embodiments, the first mounting hole 11 includes a first hole section 111 and a second hole section 112 that are connected; the inner diameter of the first hole section 111 is larger than the inner diameter of the second hole section 112; and one end of the second shaft 2 is installed in the second hole section 112.

[0065] The first hole section 111 and the second hole section 112 can both be round holes, and the central axes of the first hole section 111 and the second hole section 112 coincide with each other, which is convenient for processing and installation positioning.

[0066] The first mounting hole 11 is a stepped hole, which provides space for the installation of the locking assembly 3, so that the locking assembly 3 is better positioned and supported, and the fit between the fastener 32 and the connecting component (specifically the second shaft 2) is tighter, thereby enhancing the stability of the connection and reducing the possibility of loosening and relative displacement. When the equipment is running at high load, the first shaft 1 and the second shaft 2 still maintain a good connection state, so that the equipment works normally. The stepped hole has a strong bearing capacity and can withstand greater axial and radial forces. Compared with a through hole with an unchanged inner diameter, the stepped hole has a more uniform distribution of force when transmitting torque and bearing loads, reducing stress concentration, thereby improving the bearing capacity of the connection part, and is suitable for occasions with high requirements for strength and reliability. In addition, the stepped hole is also convenient for installing and disassembling the locking assembly 3. Taking the fastener 32 as an example of a bolt, the stepped hole provides a space for the head of the fastener 32, so that the head of the fastener 32 can be flush with the mounting surface or sunk into the hole after installation, avoiding the protrusion of the head of the fastener 32 and affecting the installation of other components or causing interference. At the same time, it is more convenient to use operating tools during disassembly, thereby improving the efficiency of maintenance and repair.

[0067] See also Figures 1 to 9 , especially Figure 6 In some embodiments, the gland 31 includes a cover body 311, a flange 312 and a protrusion 313. A portion of the cover body 311 is located in the first hole section 111, and the rest of the cover body 311 is located in the second hole section 112; the cover body 311 includes a receiving groove 311a. The flange 312 is mounted on the outer periphery of the cover body 311, or the flange 312 is integral with the cover body 311. The flange 312 is located in the first hole section 111. The protrusion 313 is located on the bottom wall of the receiving groove 311a of the cover body 311, and the protrusion 313 and the cover body 311 are fixedly connected or integral. The gland 31 is provided with a second mounting hole 311d, and the second mounting hole 311d passes through the protrusion 313 and the bottom of the receiving groove 311a. Among them, a portion of the fastener 32 is located in the receiving groove 311a and the second mounting hole 311d, and the rest of the fastener 32 is located inside the second shaft 2.

[0068] The cover body 311 is an annular component, and most of the gland 31 is located in the second hole section 112. The outer wall of the gland 31 is provided with a flange 312, and the flange 312 is located on the outer wall of one end of the cover body 311. The flange 312 is located in the first hole section 111 of the first shaft 1. The flange 312 and the cover body 311 are specifically integrated, which can make processing and manufacturing easier on the one hand, and can enhance the overall strength on the other hand: the flange 312 is integrally connected to the cover body 311, and there is no connection gap or weak connection point between the two, and it can withstand greater external forces. And the external force can be transmitted more evenly throughout the structure, and there will be no structural damage caused by loosening or breaking of the connection parts. In addition, the integrated connection can also reduce vibration and displacement, so that the bearing performance of the gland 31 is better.

[0069] The protrusion 313 is located inside the receiving groove 311a of the cover body 311 and is fixed to the bottom of the receiving groove 311a. The protrusion 313 and the cover body 311 can be integrated. The protrusion 313 and the receiving groove 311a are connected as a whole, and there is no gap between the two, and there is no stress concentration point caused by the connection, so the bearing performance of the pressure cover 31 is better. It should be noted that the protrusion 313 and the cover body 311 can also be fixedly connected.

[0070] The cover body 311, the protrusion 313 and the flange 312 are integrated, which is not only convenient for processing and manufacturing, but also makes the pressure cover 31 a whole, without the need to install or disassemble the protrusion 313 and the flange 312, and the load-bearing performance is good.

[0071] See also Figures 1 to 9 , especially Fig. 9 In some embodiments, the fastener 32 is specifically a bolt, including a bolt head 321 and a screw rod 322. The screw rod 322 is integral with the bolt head 321. The bolt head 321 is located in the receiving groove 311a; one end of the screw rod 322 facing the bolt head 321 is located in the second mounting hole 311d, and the other end of the screw rod 322 away from the bolt head 321 is located outside the gland 31 and screwed into the second shaft 2 to form a threaded connection.

[0072] See also Figures 1 to 9 , especially Figure 1 The second shaft 2 is provided with a screw hole 20 at one end located in the first mounting hole 11 of the first shaft 1, and the screw rod 322 of the fastener 32 passes through the second mounting hole 311d and is installed in the screw hole 20. Figure 2, the bolt head 321 of the bolt is clamped on the protrusion 313 of the gland 31, and the bolt head 321 is located in the receiving groove 311a. The flange 312 of the gland 31 is clamped at the transition between the first hole section 111 and the second hole section 112 of the first mounting hole 11, that is, at the step of the first mounting hole 11. In this way, the axial fixed connection of the first shaft 1, the gland 31, and the second shaft 2 is achieved through the fastener 32. As long as the fastener 32 is not loose, the axial fixed connection of the first shaft 1, the gland 31, and the second shaft 2 is always reliable.

[0073] In other embodiments, a pin or other connection method may be used to achieve an axial fixed connection between the first shaft 1 and the second shaft 2 .

[0074] The fastener 32 used in the above technical solution is easy to install and disassemble, does not require complex equipment, and can be easily operated. In addition, the fastener 32 is reusable. As long as the fastener 32 is not damaged after disassembly, it can be used again in the same or other connection occasions, which also helps to reduce costs. In addition, the connection is highly flexible, disassembly and installation are very convenient, and the reliability of the connection is relatively high. The anti-loosening component 33 can prevent the fastener 32 from reversing and loosening, forming a self-locking, and further improving the reliability of the connection.

[0075] See also Figures 1 to 9 , especially Figure 4 , Figure 7 and Fig. 9 The anti-loosening component 33 is used to prevent the fastener 32 from loosening, and the specific implementation method is as follows:

[0076] In some embodiments, the anti-loosening assembly 33 includes a locking block 331 and an elastic member 332. The locking block 331 includes a third mounting hole 331a; the locking block 331 is located inside the receiving groove 311a, and the locking block 331 is sleeved on the outer side of the protrusion 313 through the third mounting hole 331a. The locking block 331 is located between the bolt head 321 and the bottom of the receiving groove 311a; the end surface of the locking block 331 facing the bolt head 321 is provided with a first locking tooth 331d, and the end surface of the bolt head 321 facing the locking block 331 is provided with a second locking tooth 32a. The first locking tooth 331d and the second locking tooth 32a can be arranged in a circle, and the denser the first locking tooth 331d and the second locking tooth 32a are arranged, the easier it is to align and engage, similar to threaded engagement. The elastic member 332 is located between the locking block 331 and the bottom wall of the receiving groove 311a. The elastic member 332 is specifically, for example, a spring. The locking assembly 3 includes a locking state. When the locking assembly 3 is in the locking state, the fastener 32 fixedly connects the first shaft 1 and the second shaft 2, and the first locking tooth 331d of the locking block 331 is meshed with the second locking tooth 32a of the fastener 32 to prevent the fastener 32 from reversing. It should be noted that even if the first locking tooth 331d of the locking block 331 is not aligned with the second locking tooth 32a of the fastener 32 during installation, the fastener 32 may have a slight shake during the operation of the air conditioner, which will also cause the first locking tooth 331d of the locking block 331 to mesh with the second locking tooth 32a of the fastener 32.

[0077] Continue to see Figures 1 to 9 , especially Figure 4 In some embodiments, a first mounting groove 331b is provided on one side of the locking block 331 facing the bottom of the receiving groove 311a, and a second mounting groove 311b is provided on the bottom of the receiving groove 311a. One end of the elastic member 332 is located in the first mounting groove 331b, and the other end of the elastic member 332 is located in the second mounting groove 311b. The depths of the first mounting groove 331b and the second mounting groove 311b are both relatively shallow, so that both ends of the elastic member 332 can be fixed. The position of the elastic member 332 can be fixed by the first mounting groove 331b and the second mounting groove 311b, so that the elastic member 332 will not shake at will in the receiving groove 311a. It should be noted that in order to illustrate the positions of the first mounting groove 331b and the second mounting groove 311b, and how the elastic member 332 is installed in the first mounting groove 331b and the second mounting groove 311b, the depths of the first mounting groove 331b and the second mounting groove 311b are drawn relatively deep in the drawings herein. In actual applications, the depths of the two can be shallower.

[0078] See also Figures 1 to 9 , especially Fig. 9In some embodiments, the number of elastic members 332 is multiple groups, and the multiple groups of elastic members 332 are arranged at intervals along the circumference of the fastener 32. Using multiple elastic members 332 to disperse and support the locking block 331, the locking block 331 has more supporting points, a larger supporting area, and a more stable support.

[0079] See also Figures 1 to 9 , especially Figure 3 , Figure 4 , Figure 6 , H is greater than the sum of A and B. Wherein, H is the height of the protrusion 313 along the axial direction of the first axis 1, see Figure 6 A is the minimum length of the elastic member 332, see Figure 3 B is the axial height of the locking block 331 along the first axis 1, see Figure 3 Here, the depths of the first mounting groove 331b and the second mounting groove 311b are both negligible. The height of the protrusion 313 meets the above-mentioned size requirements because when unlocking is required, the locking block 331 needs to move in a direction away from the bolt head 321, and the above-mentioned size provides space for the movement of the locking block 331 when unlocking.

[0080] See also Figures 1 to 9 , especially Figure 2 When the anti-loosening assembly 33 is in the original state, the fastener 32 has not been installed in place, and the locking block 331 is supported by the elastic member 332. There is a gap between the bolt head 321 of the fastener 32 and the locking block 331, and the two are separated.

[0081] See also Figures 1 to 9 , especially Figure 3 In some embodiments, when the locking assembly 3 is in a locked state, a first gap P1 exists between the locking block 331 and the bottom of the accommodating groove 311a.

[0082] In addition, when the anti-loosening assembly 33 is in the locked state, the fastener 32 is screwed to a suitable position, the locking block 331 is still supported by the elastic member 332, and the first locking tooth 331d of the locking block 331 is engaged with the second locking tooth 32a of the fastener 32. Under the action of the first locking tooth 331d and the second locking tooth 32a, the fastener 32 is difficult to reverse, so the fastener 32 will not loosen, and the reliability of the connection is very high.

[0083] See also Figures 1 to 9 , especially Figure 4In some embodiments, the locking assembly 3 further includes an unlocking state. When the locking assembly 3 is in the unlocking state, the locking block 331 leaves the bolt head 321 of the fastener 32 under the action of an external force, and a second gap P2 is formed between the locking block 331 and the bottom surface of the bolt head 321 of the fastener 32. Due to the existence of the second gap P2, the first locking tooth 331d and the second locking tooth 32a are disengaged, the fastener 32 is no longer locked, and the fastener 32 can rotate in the opposite direction under the action of an external force.

[0084] In addition, when the anti-loosening assembly 33 is in the unlocked state, the locking block 331 is first pushed along the axial direction of the first shaft 1, so that the locking block 331 overcomes the elastic force of the elastic member 332 and moves a certain distance in the direction away from the bolt head 321 of the fastener 32, and the second locking tooth 32a of the fastener 32 is separated from the first locking tooth 331d of the locking block 331, and then the fastener 32 can be reversed and removed. When the first shaft 1 and the second shaft 2 need to be separated, this method can be used to quickly remove the first shaft 1 and the second shaft 2, and the efficiency is very high.

[0085] See also Figures 1 to 9 , especially Figure 6 and Figure 7 In some embodiments, a guide groove 311c is provided on the groove wall of the accommodating groove 311a, and a guide block 331c is provided on the edge of the locking block 331, and the guide block 331c is installed in the guide groove 311c.

[0086] The cooperation of the guide groove 311c and the guide block 331c can achieve high-precision positioning, so that the locking block 331 can move in a straight line but cannot rotate. The guide groove 311c can provide a precise movement path for the guide block 331c, so that the locking block 331 can always maintain an accurate position during the movement of the accommodating groove 311a of the pressure cover 31. In addition, the cooperation of the guide groove 311c and the guide block 331c can achieve a smooth installation of the locking block 331, effectively reducing the shaking and deviation of the locking block 331 during the installation process. The side wall of the guide groove 311c can impose lateral constraints on the guide block 331c, so that the locking block 331 is more stable when moving in a straight line. In actual use, even in an environment where there are external interference factors such as vibration, impact, etc., the locking block 331 is not easy to rotate relative to the pressure cover 31, which improves the reliability of the moving shaft connection assembly.

[0087] In some embodiments, the number of guide grooves 311c is multiple, and the number of guide blocks 331c is also multiple, and can be an even number. The guide blocks 331c are symmetrically arranged relative to the axis of the third mounting hole 331a of the locking block 331 to take into account the dynamic balance of the first axis 1 and the second axis 2. The guide grooves 311c and the guide blocks 331c are arranged one by one. The number of guide blocks 331c and guide grooves 311c is, for example, 2 to 6, which can meet the installation and guiding requirements and make the installation of the locking block 331 very convenient.

[0088] An embodiment of the present invention further provides an air conditioner, comprising a dynamic shaft connection assembly provided by any technical solution of the present invention.

[0089] The air conditioner provided by the embodiment of the present invention includes the dynamic shaft connection assembly provided by any technical solution of the present invention, and therefore has the advantages described above.

[0090] In some embodiments, the first shaft 1 is a motor shaft, the second shaft 2 is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

[0091] The air conditioner adopts the above method to realize the connection between the motor shaft and the compressor rotor shaft, the connection is reliable, and the movement of the compressor is safer and smoother.

[0092] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the protection content of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0093] In the description of the present invention, each technical feature may be combined with other technical features where feasible.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A moving shaft connection assembly, characterized in that: include: The first shaft (1) comprises a first mounting hole (11) which penetrates the first shaft (1) along the axial direction of the first shaft (1); A second shaft (2) is mounted in the first mounting hole (11), and the second shaft (2) is drivingly connected to the first shaft (1), so that the rotation of one of the first shaft (1) and the second shaft (2) drives the other to rotate; as well as A locking assembly (3) is constructed to limit the axial relative displacement of the first shaft (1) and the second shaft (2); the locking assembly (3) comprises a pressure cover (31), a fastener (32) and an anti-loosening assembly (33) all located in the first mounting hole (11); the fastener (32) fixes the first shaft (1), the pressure cover (31) and the second shaft (2); the anti-loosening assembly (33) is constructed to prevent the fastener (32) from loosening.

2. The dynamic shaft connection assembly according to claim 1, characterized in that: The first mounting hole (11) comprises a first hole section (111) and a second hole section (112) which are connected; the inner diameter of the first hole section (111) is larger than the inner diameter of the second hole section (112); and one end of the second shaft (2) is mounted in the second hole section (112).

3. The dynamic shaft connection assembly according to claim 2, characterized in that: The gland (31) comprises: a cover body (311), a portion of the cover body (311) being located in the first hole section (111), and the rest of the cover body (311) being located in the second hole section (112); the cover body (311) comprising a receiving groove (311a); a flange (312) mounted on the outer periphery of the cover body (311), or the flange (312) and the cover body (311) are integral; the flange (312) is located in the first hole section (111); and A protrusion (313) is located at the bottom of the receiving groove (311a) of the cover body (311), and the protrusion (313) and the cover body (311) are fixedly connected or are integrated; the pressure cover (31) is provided with a second mounting hole (311d), and the second mounting hole (311d) passes through the protrusion (313) and the bottom of the receiving groove (311a); Part of the fastener (32) is located in the accommodating groove (311a) and the second mounting hole (311d), and the rest of the fastener (32) is located inside the second shaft (2).

4. The dynamic shaft connection assembly according to claim 3, characterized in that: The fastener (32) comprises: A bolt head (321) is located in the receiving groove (311a); and The screw rod (322) is integral with the bolt head (321); one end of the screw rod (322) facing the bolt head (321) is located in the second mounting hole (311d), and the other end of the screw rod (322) away from the bolt head (321) is located outside the gland (31) and is screwed into the interior of the second shaft (2) to form a threaded connection.

5. The dynamic shaft connection assembly according to claim 4, characterized in that: The anti-loosening assembly (33) comprises: A locking block (331), comprising a third mounting hole (331a); the locking block (331) is located inside the receiving groove (311a), and the locking block (331) is sleeved on the outside of the protrusion (313) through the third mounting hole (331a); the locking block (331) is located between the bolt head (321) and the bottom of the receiving groove (311a); the end surface of the locking block (331) facing the bolt head (321) is provided with a first locking tooth (331d), and the end surface of the bolt head (321) facing the locking block (331) is provided with a second locking tooth (32a); and An elastic member (332) is located between the locking block (331) and the bottom wall of the accommodating groove (311a); The locking assembly (3) includes a locking state. When the locking assembly (3) is in the locking state, the fastener (32) fixes the first shaft (1) and the second shaft (2) in connection, and the first locking tooth (331d) of the locking block (331) is meshed with the second locking tooth (32a) of the fastener (32) to prevent the fastener (32) from reversing.

6. The dynamic shaft connection assembly according to claim 5, characterized in that: When the locking assembly (3) is in a locked state, a first gap exists between the locking block (331) and the bottom of the accommodating groove (311a).

7. The dynamic shaft connection assembly according to claim 5, characterized in that: The locking assembly (3) also includes an unlocking state. When the locking assembly (3) is in the unlocking state, the locking block (331) leaves the bolt head (321) of the fastener (32) under the action of an external force, and a second gap is formed between the locking block (331) and the bolt head (321) of the fastener (32).

8. The dynamic shaft connection assembly according to claim 5, characterized in that: The groove wall of the accommodating groove (311a) is provided with a guide groove (311c), the edge of the locking block (331) is provided with a guide block (331c), and the guide block (331c) is installed in the guide groove (311c).

9. The dynamic shaft connection assembly according to claim 8, characterized in that: There are a plurality of guide blocks (331c), and each guide block (331c) is symmetrically arranged relative to the axis center line of the third mounting hole (331a) of the locking block (331).

10. The dynamic shaft connection assembly according to claim 8, characterized in that: The number of the guide grooves (311c) is multiple, the number of the guide blocks (331c) is also multiple, and the guide grooves (311c) and the guide blocks (331c) are arranged in a one-to-one correspondence.

11. The dynamic shaft connection assembly according to claim 5, characterized in that: A first mounting groove (331b) is provided on one side of the locking block (331) facing the bottom of the accommodating groove (311a), and a second mounting groove (311b) is provided on the bottom of the accommodating groove (311a); one end of the elastic member (332) is located in the first mounting groove (331b), and the other end of the elastic member (332) is located in the second mounting groove (311b).

12. The dynamic shaft connection assembly according to claim 5, characterized in that: The elastic members (332) are provided in a plurality of groups, and the plurality of groups of elastic members (332) are arranged at intervals along the circumference of the fastener (32).

13. The dynamic shaft connection assembly according to claim 5, characterized in that: H is greater than the sum of A and B; wherein H is the axial height of the protrusion (313) along the first axis (1), A is the minimum length of the elastic member (332), and B is the axial height of the locking block (331) along the first axis (1).

14. An air conditioner, characterized in that: It comprises the dynamic shaft connection assembly described in any one of claims 1 to 13.

15. The air conditioner according to claim 14, characterized in that: The first shaft (1) is a motor shaft, the second shaft (2) is a compressor rotor shaft, and the motor shaft and the compressor rotor shaft are drive-connected via a key connection.

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